The Midnight Twins by Jacquelyn Mitchard

Meredith and Mallory Brynn are mirror twins born on either side of midnight one snowy New Y ear’s Eve. They have always been inseparable. But after they are nearly killed in a mysterious fire on their thirteenth birthday, the bond that has always joined them unravels. They begin to have visions and dreams that reveal the deep secrets kept by the people around them. Meredith and Mallory realize they have each been given a gift: Mallory can see deep into the past; Meredith can see the future. But when they discover that one boy is not what they imagined, their lives will be changed forever. If they can survive . . .